Locking device for cocks with exchangeable lock.



M. EBERT. V LOCKING DEVICE FOR GOUKS' WITH- EXGHANGBABLE LOOK.

APPLICATION FILED APR. 3, 1908.

Patented Dec.22,1908.

FIC A NORRIS #:Tsns ca, WASHINGTON D c MAX EBERT, OF BERLIN, GERMANY.

LOCKING DEVICE FOR COCKS WITH EXCHANGEABLE LOCK.

Specification of Letters Patent.

Application filed April 3, 1908.

Patented Dec. 22, 1908.

Serial No. 424,885.

To all whom it may concern:

Be it known that I, MAX EBERT, a subject of the German Emperor, andresident of Berlin, N. Germany, have invented certain new and usefulImprovements in Looking Devices for Cocks with Exchangeable Locks, ofwhich the following is a specification.

This invention relates to an improved looking device for cocks withexchangeable lock, which prevents an unauthorized turning of the cock,in open or closed position of the latter.

From the known locking devices of similar kind the subject matter of thepresent invention is distinct in that the lock is shifted from up abovebetween two extensions which are laterally disposed on the casing of thecock and provided with grooves the lock being guided by ledges fittingsaid grooves. The lock when in position is covered by a projectionserving as abutment for the bolt of the lock so that the lock can not beremoved unless the cock proper is taken out of the casing.

In the accompanying drawing, Figures 1 and 2 are an elevation and planrespectively, of a cock provided with the improved locking device, whileFigs. 3 and 4 show similar views, of the lock alone.

A look d which is adapted to the shape of the cock proper a and fittedwith two ledges b and with supporting studs 0, isupon the cock properbeing taken outshifted from up above between two extensions g which arelaterally disposed on the casing of the cock and provided with grooves12 corresponding to the ledges b of the lock and connected at theirlower part by a wall f, the lock being firmly connected with the cock bytwo screws h which pass through holes in the supporting studs 0 of thelock and in the extensions g of the casing. On the cock proper a theprojection i is provided in such a way that the same is arrested, in theopen or closed position of the cock proper, by the bolt 7c of the closedlock (1 in that said bolt engages notches 0 in the projection i. In thisway, the bolt is is wholly covered and invisible. At the same time oneof the screws h which serve to fix the lock in the cock, is covered bythe projection i. The movable guard of the lock, is on its free end bentto form an eye for the purpose of preventing an unauthorized unlockingof the look by the arrangement of a lead-seal between said eye and twoeyes m provided on the look. In the same way, in order to prevent anunauthorized removal of the cock proper another lead-seal may be passedthrough the hole '12 provided in the lower projecting end of the cockproper.

Having fully described my .invention, what I claim and desire to secureby Letters Patent is A locking device for cocks with exchange- .ablelock, comprising in combination with the cock proper having a projectionand the casing of said cock having two grooved extensions; the lockproper having a bolt and ledges and designed to be shifted with thelatter between said grooved extensions and when inserted to be coveredby the projection on said cock, said projection serving as abutment forthe bolt of said look so as to prevent said look from being removedwithout taking out said cock.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

MAX EBERT.

Witnesses HENRY HASPER, WOLDEMAR HAUPT.

